2-Iodo-6-nitro-3-(trifluoromethoxy)pyridine-5-sulfonamide
3-(Chloromethyl)-4-iodo-2-(trifluoromethoxy)pyridine-5-carboxylic acid
6-Iodo-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
3-(Chloromethyl)-2-iodo-5-(trifluoromethoxy)pyridine-6-carboxylic acid